Extracting prog: 26.340089742s
Minimizing prog: 20m17.135064196s
Simplifying prog options: 0s
Extracting C: 43.553056801s
Simplifying C: 4m23.100330347s


extracting reproducer from 90 programs
first checking the prog from the crash report
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int-write$nbd-connect$pppl2tp-getsockopt-ioctl$TUNSETIFF-ioctl$TUNSETOFFLOAD-syz_emit_ethernet-ioctl$TUNSETLINK
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
r6 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r7 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r7, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r8=>0x0})
bind$packet(r7, &(0x7f00000000c0)={0x11, 0x0, r8, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r7, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)
write$nbd(r7, &(0x7f0000000200)=ANY=[], 0x8d)
connect$pppl2tp(r6, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x0, r7, {0x2, 0xffff, @dev={0xac, 0x14, 0x14, 0x44}}, 0x2, 0x0, 0x202}}, 0x2e)
getsockopt(r6, 0x111, 0x7, 0x0, 0x0)
ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, &(0x7f0000000040)={'syzkaller1\x00', 0x2})
ioctl$TUNSETOFFLOAD(0xffffffffffffffff, 0x400454c9, 0xba98575a95aeb70d)
syz_emit_ethernet(0x4e, &(0x7f0000000380)={@link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x2}, @broadcast, @val={@void, {0x8100, 0x0, 0x0, 0x3}}, {@ipv4={0x800, @icmp={{0xa, 0x4, 0x0, 0x0, 0x3c, 0x0, 0x0, 0x0, 0x1, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}, @remote, {[@timestamp_addr={0x44, 0x14, 0xa, 0x1, 0x0, [{@empty, 0x1}, {@initdev={0xac, 0x1e, 0x0, 0x0}, 0x5}]}]}}, @timestamp={0xd, 0x0, 0x0, 0x0, 0xfffe, 0x2}}}}}, 0x0)
ioctl$TUNSETLINK(0xffffffffffffffff, 0x400454cd, 0x6)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_get_session
single: successfully extracted reproducer
found reproducer with 29 syscalls
minimizing guilty program
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int-write$nbd-connect$pppl2tp-getsockopt-ioctl$TUNSETIFF-ioctl$TUNSETOFFLOAD-syz_emit_ethernet
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
r6 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r7 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r7, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r8=>0x0})
bind$packet(r7, &(0x7f00000000c0)={0x11, 0x0, r8, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r7, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)
write$nbd(r7, &(0x7f0000000200)=ANY=[], 0x8d)
connect$pppl2tp(r6, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x0, r7, {0x2, 0xffff, @dev={0xac, 0x14, 0x14, 0x44}}, 0x2, 0x0, 0x202}}, 0x2e)
getsockopt(r6, 0x111, 0x7, 0x0, 0x0)
ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, &(0x7f0000000040)={'syzkaller1\x00', 0x2})
ioctl$TUNSETOFFLOAD(0xffffffffffffffff, 0x400454c9, 0xba98575a95aeb70d)
syz_emit_ethernet(0x4e, &(0x7f0000000380)={@link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x2}, @broadcast, @val={@void, {0x8100, 0x0, 0x0, 0x3}}, {@ipv4={0x800, @icmp={{0xa, 0x4, 0x0, 0x0, 0x3c, 0x0, 0x0, 0x0, 0x1, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}, @remote, {[@timestamp_addr={0x44, 0x14, 0xa, 0x1, 0x0, [{@empty, 0x1}, {@initdev={0xac, 0x1e, 0x0, 0x0}, 0x5}]}]}}, @timestamp={0xd, 0x0, 0x0, 0x0, 0xfffe, 0x2}}}}}, 0x0)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_get_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int-write$nbd-connect$pppl2tp-getsockopt-ioctl$TUNSETIFF-ioctl$TUNSETOFFLOAD
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
r6 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r7 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r7, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r8=>0x0})
bind$packet(r7, &(0x7f00000000c0)={0x11, 0x0, r8, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r7, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)
write$nbd(r7, &(0x7f0000000200)=ANY=[], 0x8d)
connect$pppl2tp(r6, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x0, r7, {0x2, 0xffff, @dev={0xac, 0x14, 0x14, 0x44}}, 0x2, 0x0, 0x202}}, 0x2e)
getsockopt(r6, 0x111, 0x7, 0x0, 0x0)
ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, &(0x7f0000000040)={'syzkaller1\x00', 0x2})
ioctl$TUNSETOFFLOAD(0xffffffffffffffff, 0x400454c9, 0xba98575a95aeb70d)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_get_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int-write$nbd-connect$pppl2tp-getsockopt-ioctl$TUNSETIFF
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
r6 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r7 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r7, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r8=>0x0})
bind$packet(r7, &(0x7f00000000c0)={0x11, 0x0, r8, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r7, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)
write$nbd(r7, &(0x7f0000000200)=ANY=[], 0x8d)
connect$pppl2tp(r6, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x0, r7, {0x2, 0xffff, @dev={0xac, 0x14, 0x14, 0x44}}, 0x2, 0x0, 0x202}}, 0x2e)
getsockopt(r6, 0x111, 0x7, 0x0, 0x0)
ioctl$TUNSETIFF(0xffffffffffffffff, 0x400454ca, &(0x7f0000000040)={'syzkaller1\x00', 0x2})

program crashed: KASAN: use-after-free Read in l2tp_tunnel_get_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int-write$nbd-connect$pppl2tp-getsockopt
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$eJzs3c9rXNUeAPDvzDRpkua9/niPR9sHr4U+6HtKM/mBNFEXulIXBbHgRqHGZBprJpmQmdQmdJHqrgsXoiiIC/f+BW7syiKIa92LC6lojaCCMHLvzKT5NXXQNAO5nw/czrn33M73nAzfw51z750bQGadTv7JRQxGxBcRcbixunmH042XtbvXp5IlF/X6xe9z6X7JemvX1v87FBGrEdEXEc89FfFybnvc6vLK7GS5XFpsrhdrcwvF6vLKuStzkzOlmdL8yPj5iYnx4bHRiV3r6803X7154eNnej/6+Y07t9/69JOkWYPNuo392E2NrvfE0Q3bDkTE4w8iWBcUmv3p73ZD+FOSz+8fEXEmzf/DUUg/TSAL6vV6/bf6wXbVq3Vg38qnx8C5/FBENMr5/NBQ4xj+nzGQL1eqtYcvV5bmpxvHykeiJ3/5Srk03PyucCR6csn6SFq+tz66ZX0sIj0GfrvQn64PTVXK03s71AFbHNqS/z8VGvkPZISv/JBd8h+yS/5Ddsl/yC75D9kl/yG75D9kl/yH7JL/kF3yH7JL/kMmPXvhQrLUW/e/T19dXpqtXD03XarODs0tTQ1NVRYXhmYqlZn0np25P3q/cqWyMPJILF0r1krVWrG6vHJprrI0X7uU3td/qdSzJ70COnH01K2vchGx+mh/uiR6m3VyFfa3ej0X3b4HGeiOQrcHIKBrTP1BdvmOD+zwE72b9LWrWNj9tgB7I9/tBgBdc/aE83+QVeb/IbvM/0N2OcYHzP9D9pj/h+wabPP8r79teHbXcET8PSK+LPQcbD3rC9gP8t/mmsf/Zw//d3BrbW/ul/QUQW9EvPb+xXevTdZqiyPJ9h/Wt9fea24f7Ub7gU618rSVxwBAdq3dvT7VWvYy7ndPNi5C2B7/QHNusi89Rzmwltt0rUJul65dWL0REcd3ip9rPu+8ceZjYK2wLf6x5muu8RZpew+kz03fm/gnNsT/z4b4J//yXwWy4VYy/gzvlH/5NKdjPf82jz+Du3TtRPvxL78+/hXajH+nOozxygevf9M2/o2IkzvGb8XrS2NtjZ+07WyH8e+8+Py/2tXVP2y8z07xW5JSsTa3UKwur5xLf0dupjQ/Mn5+YmJ8eGx0opjOURdbM9XbPXb889v36/9Am/jt+v9Es03/77D/v/77sxdO3yf+/87s/PkfaxM/0R8RD3UY/8fRr19qV5fEn27T//x94ifbxjqMX33n6YMd7goA7IHq8srsZLlcWlRQUFBYL3R7ZAIetHtJ3+2WAAAAAAAAAAAAAJ3ai8uJu91HAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAID94PcAAAD//5j81ps=")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
r6 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r7 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r7, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r8=>0x0})
bind$packet(r7, &(0x7f00000000c0)={0x11, 0x0, r8, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r7, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)
write$nbd(r7, &(0x7f0000000200)=ANY=[], 0x8d)
connect$pppl2tp(r6, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x0, r7, {0x2, 0xffff, @dev={0xac, 0x14, 0x14, 0x44}}, 0x2, 0x0, 0x202}}, 0x2e)
getsockopt(r6, 0x111, 0x7, 0x0, 0x0)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_get_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int-write$nbd-connect$pppl2tp
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
r6 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r7 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r7, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r8=>0x0})
bind$packet(r7, &(0x7f00000000c0)={0x11, 0x0, r8, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r7, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)
write$nbd(r7, &(0x7f0000000200)=ANY=[], 0x8d)
connect$pppl2tp(r6, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x0, r7, {0x2, 0xffff, @dev={0xac, 0x14, 0x14, 0x44}}, 0x2, 0x0, 0x202}}, 0x2e)

program crashed: KASAN: use-after-free Read in l2tp_tunnel_get_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int-write$nbd
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r6 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r6, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r7=>0x0})
bind$packet(r6, &(0x7f00000000c0)={0x11, 0x0, r7, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r6, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)
write$nbd(r6, &(0x7f0000000200)=ANY=[], 0x8d)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet-setsockopt$packet_int
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r6 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r6, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r7=>0x0})
bind$packet(r6, &(0x7f00000000c0)={0x11, 0x0, r7, 0x1, 0x0, 0x6, @remote}, 0x14)
setsockopt$packet_int(r6, 0x107, 0xf, &(0x7f0000000000)=0xe9, 0x4)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX-bind$packet
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r6 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r6, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00', <r7=>0x0})
bind$packet(r6, &(0x7f00000000c0)={0x11, 0x0, r7, 0x1, 0x0, 0x6, @remote}, 0x14)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket-ioctl$sock_SIOCGIFINDEX
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
r6 = socket(0x11, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(r6, 0x8933, &(0x7f00000005c0)={'veth0_to_bridge\x00'})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE-socket
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})
socket(0x11, 0x3, 0x0)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet-ioctl$VT_SETMODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)
ioctl$VT_SETMODE(r5, 0x5602, &(0x7f0000000100)={0x55, 0xf, 0x5, 0x40, 0xff99})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp-socket$packet
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$packet(0x11, 0x3, 0x300)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect-socket$pppl2tp
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$eJzs3c9rXNUeAPDvzDRpkua9/niPR9sHr4U+6HtKM/mBNFEXulIXBbHgRqHGZBprJpmQmdQmdJHqrgsXoiiIC/f+BW7syiKIa92LC6lojaCCMHLvzKT5NXXQNAO5nw/czrn33M73nAzfw51z750bQGadTv7JRQxGxBcRcbixunmH042XtbvXp5IlF/X6xe9z6X7JemvX1v87FBGrEdEXEc89FfFybnvc6vLK7GS5XFpsrhdrcwvF6vLKuStzkzOlmdL8yPj5iYnx4bHRiV3r6803X7154eNnej/6+Y07t9/69JOkWYPNuo392E2NrvfE0Q3bDkTE4w8iWBcUmv3p73ZD+FOSz+8fEXEmzf/DUUg/TSAL6vV6/bf6wXbVq3Vg38qnx8C5/FBENMr5/NBQ4xj+nzGQL1eqtYcvV5bmpxvHykeiJ3/5Srk03PyucCR6csn6SFq+tz66ZX0sIj0GfrvQn64PTVXK03s71AFbHNqS/z8VGvkPZISv/JBd8h+yS/5Ddsl/yC75D9kl/yG75D9kl/yH7JL/kF3yH7JL/kMmPXvhQrLUW/e/T19dXpqtXD03XarODs0tTQ1NVRYXhmYqlZn0np25P3q/cqWyMPJILF0r1krVWrG6vHJprrI0X7uU3td/qdSzJ70COnH01K2vchGx+mh/uiR6m3VyFfa3ej0X3b4HGeiOQrcHIKBrTP1BdvmOD+zwE72b9LWrWNj9tgB7I9/tBgBdc/aE83+QVeb/IbvM/0N2OcYHzP9D9pj/h+wabPP8r79teHbXcET8PSK+LPQcbD3rC9gP8t/mmsf/Zw//d3BrbW/ul/QUQW9EvPb+xXevTdZqiyPJ9h/Wt9fea24f7Ub7gU618rSVxwBAdq3dvT7VWvYy7ndPNi5C2B7/QHNusi89Rzmwltt0rUJul65dWL0REcd3ip9rPu+8ceZjYK2wLf6x5muu8RZpew+kz03fm/gnNsT/z4b4J//yXwWy4VYy/gzvlH/5NKdjPf82jz+Du3TtRPvxL78+/hXajH+nOozxygevf9M2/o2IkzvGb8XrS2NtjZ+07WyH8e+8+Py/2tXVP2y8z07xW5JSsTa3UKwur5xLf0dupjQ/Mn5+YmJ8eGx0opjOURdbM9XbPXb889v36/9Am/jt+v9Es03/77D/v/77sxdO3yf+/87s/PkfaxM/0R8RD3UY/8fRr19qV5fEn27T//x94ifbxjqMX33n6YMd7goA7IHq8srsZLlcWlRQUFBYL3R7ZAIetHtJ3+2WAAAAAAAAAAAAAJ3ai8uJu91HAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAID94PcAAAD//5j81ps=")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)
socket$pppl2tp(0x18, 0x1, 0x1)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE-syz_usb_connect
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)
syz_usb_connect(0x0, 0x24, &(0x7f0000000000)=ANY=[@ANYBLOB="1201000081dd22104c052e000005010203010902120001000000000904000000f7045c"], 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r5 = dup(r2)
ioctl$EVIOCGKEYCODE(r5, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-dup
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
dup(r2)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-connect$pppl2tp-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
ioctl$EVIOCGKEYCODE(0xffffffffffffffff, 0x80084504, &(0x7f0000000080)=""/49)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-socket$inet6_udp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
socket$inet6_udp(0xa, 0x2, 0x0)
r4 = dup(r2)
ioctl$EVIOCGKEYCODE(r4, 0x80084504, &(0x7f0000000080)=""/49)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-pwrite64-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
pwrite64(r3, &(0x7f0000000140)='2', 0xfdef, 0xe7c)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, 0xffffffffffffffff, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r4 = dup(r2)
ioctl$EVIOCGKEYCODE(r4, 0x80084504, &(0x7f0000000080)=""/49)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-openat-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
openat(0xffffffffffffff9c, &(0x7f0000000040)='./file1\x00', 0x101042, 0x15)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r4 = dup(r2)
ioctl$EVIOCGKEYCODE(r4, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-syz_mount_image$ext4-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
syz_mount_image$ext4(&(0x7f0000000240)='ext4\x00', &(0x7f0000000500)='./file1\x00', 0x400, &(0x7f0000000300)={[{@barrier_val={'barrier', 0x3d, 0x81}}, {@minixdf}, {@bh}, {@delalloc}, {@dioread_nolock}, {@noquota}]}, 0x1, 0x4a6, &(0x7f0000000a40)="$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")
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r4 = dup(r2)
ioctl$EVIOCGKEYCODE(r4, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r4 = dup(r2)
ioctl$EVIOCGKEYCODE(r4, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-writev-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$netlink(0x10, 0x3, 0x8000000004)
writev(r1, &(0x7f0000000140)=[{&(0x7f00000001c0)="580000001400192340834b80040d8c560a067f0202ff000000000000000058000b4824ca945f64009400ff0325010ebc000000000000008000f0fffeffe809005300fff5dd00000010000100040c10000000010000000000", 0x58}], 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(0xffffffffffffffff, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r3 = dup(0xffffffffffffffff)
ioctl$EVIOCGKEYCODE(r3, 0x80084504, &(0x7f0000000080)=""/49)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$netlink-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
socket$netlink(0x10, 0x3, 0x8000000004)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r3 = dup(r1)
ioctl$EVIOCGKEYCODE(r3, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-connect$inet6-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
connect$inet6(r0, &(0x7f0000000300)={0xa, 0x3, 0x8, @loopback, 0xfffffffe}, 0x1c)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r3 = dup(r1)
ioctl$EVIOCGKEYCODE(r3, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-setsockopt$inet6_tcp_int-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$inet6_tcp(0xa, 0x1, 0x0)
setsockopt$inet6_tcp_int(r0, 0x6, 0x13, &(0x7f0000000180)=0x100000001, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r3 = dup(r1)
ioctl$EVIOCGKEYCODE(r3, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$inet6_tcp-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
socket$inet6_tcp(0xa, 0x1, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r2 = dup(r0)
ioctl$EVIOCGKEYCODE(r2, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mmap-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r2 = dup(r0)
ioctl$EVIOCGKEYCODE(r2, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r2 = dup(r0)
ioctl$EVIOCGKEYCODE(r2, 0x80084504, &(0x7f0000000080)=""/49)

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, 0x0, 0x0)
r1 = dup(r0)
ioctl$EVIOCGKEYCODE(r1, 0x80084504, &(0x7f0000000080)=""/49)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r2 = dup(r0)
ioctl$EVIOCGKEYCODE(r2, 0x80084504, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
a never seen crash title: KASAN: use-after-free Read in rcu_cblist_dequeue, ignore
testing compiled C program (duration=30s, {Threaded:true Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
a never seen crash title: KASAN: use-after-free Read in rcu_cblist_dequeue, ignore
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue
a never seen crash title: KASAN: use-after-free Write in rcu_segcblist_enqueue, ignore
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r2 = dup(r0)
ioctl$EVIOCGKEYCODE(r2, 0x80084504, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r2 = dup(r0)
ioctl$EVIOCGKEYCODE(r2, 0x80084504, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-dup-ioctl$EVIOCGKEYCODE
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e)
r2 = dup(r0)
ioctl$EVIOCGKEYCODE(r2, 0x80084504, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
reproducing took 27m27.564479578s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff88812fd6b150 by task syz.6.17/397

CPU: 1 PID: 397 Comm: syz.6.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
 mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
 pppol2tp_release+0x178/0x2b0 net/l2tp/l2tp_ppp.c:441
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1390
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fedf419e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff8582b458 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff8582b540 RCX: 00007fedf419e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000007938 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33220000 R11: 0000000000000246 R12: 00007fff8582b580
R13: 00007fedf4425fac R14: 0000000000007974 R15: 00007fedf4425fa0
 </TASK>

Allocated by task 398:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb4/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 l2tp_session_create+0x38/0xbd0 net/l2tp/l2tp_core.c:1614
 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:771
 __sys_connect_file net/socket.c:2001 [inline]
 __sys_connect+0x3da/0x460 net/socket.c:2018
 __do_sys_connect net/socket.c:2028 [inline]
 __se_sys_connect net/socket.c:2025 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2025
 x64_sys_call+0x88d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 397:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3df/0x4d0 net/l2tp/l2tp_core.c:1587
 pppol2tp_release+0x169/0x2b0 net/l2tp/l2tp_ppp.c:438
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1390
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88812fd6b000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff88812fd6b000, ffff88812fd6b200)

The buggy address belongs to the physical page:
page:ffffea0004bf5a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12fd68
head:ffffea0004bf5a00 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 378, tgid 378 (syz-executor), ts 31068540512, free_ts 28687978231
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2680
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958
 kmalloc_reserve net/core/skbuff.c:449 [inline]
 __alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
 alloc_skb include/linux/skbuff.h:1322 [inline]
 nlmsg_new include/net/netlink.h:987 [inline]
 netlink_ack+0x373/0x1160 net/netlink/af_netlink.c:2463
 netlink_rcv_skb+0x27e/0x450 net/netlink/af_netlink.c:2532
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6172
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x8c1/0xa60 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x8b9/0xbd0 net/netlink/af_netlink.c:1878
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1581 [inline]
 free_pcp_prepare mm/page_alloc.c:1655 [inline]
 free_unref_page_prepare+0x81b/0x820 mm/page_alloc.c:3622
 free_unref_page+0x93/0x530 mm/page_alloc.c:3720
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6021
 __vunmap+0xa3c/0xc00 mm/vmalloc.c:2739
 __vfree mm/vmalloc.c:2788 [inline]
 vfree+0x61/0x90 mm/vmalloc.c:2819
 kcov_put kernel/kcov.c:437 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:533
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xb0d/0x29f0 kernel/exit.c:896
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1040
 get_signal+0x167c/0x1700 kernel/signal.c:2904
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303

Memory state around the buggy address:
 ffff88812fd6b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812fd6b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812fd6b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff88812fd6b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812fd6b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff88812fd6b150 by task syz.6.17/397

CPU: 1 PID: 397 Comm: syz.6.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
 mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
 pppol2tp_release+0x178/0x2b0 net/l2tp/l2tp_ppp.c:441
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1390
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fedf419e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fff8582b458 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fff8582b540 RCX: 00007fedf419e159
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000007938 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33220000 R11: 0000000000000246 R12: 00007fff8582b580
R13: 00007fedf4425fac R14: 0000000000007974 R15: 00007fedf4425fa0
 </TASK>

Allocated by task 398:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x1f/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb4/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 l2tp_session_create+0x38/0xbd0 net/l2tp/l2tp_core.c:1614
 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:771
 __sys_connect_file net/socket.c:2001 [inline]
 __sys_connect+0x3da/0x460 net/socket.c:2018
 __do_sys_connect net/socket.c:2028 [inline]
 __se_sys_connect net/socket.c:2025 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2025
 x64_sys_call+0x88d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 397:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3df/0x4d0 net/l2tp/l2tp_core.c:1587
 pppol2tp_release+0x169/0x2b0 net/l2tp/l2tp_ppp.c:438
 __sock_release net/socket.c:652 [inline]
 sock_close+0xc9/0x220 net/socket.c:1390
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88812fd6b000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff88812fd6b000, ffff88812fd6b200)

The buggy address belongs to the physical page:
page:ffffea0004bf5a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12fd68
head:ffffea0004bf5a00 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 378, tgid 378 (syz-executor), ts 31068540512, free_ts 28687978231
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2673
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2680
 get_page_from_freelist+0x2ca9/0x2d20 mm/page_alloc.c:4587
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5931
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3e0 mm/slub.c:2020
 ___slab_alloc+0x70f/0xb70 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x204/0x2d0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc_node_track_caller+0xa1/0x1e0 mm/slab_common.c:958
 kmalloc_reserve net/core/skbuff.c:449 [inline]
 __alloc_skb+0x226/0x4a0 net/core/skbuff.c:518
 alloc_skb include/linux/skbuff.h:1322 [inline]
 nlmsg_new include/net/netlink.h:987 [inline]
 netlink_ack+0x373/0x1160 net/netlink/af_netlink.c:2463
 netlink_rcv_skb+0x27e/0x450 net/netlink/af_netlink.c:2532
 rtnetlink_rcv+0x1c/0x20 net/core/rtnetlink.c:6172
 netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
 netlink_unicast+0x8c1/0xa60 net/netlink/af_netlink.c:1345
 netlink_sendmsg+0x8b9/0xbd0 net/netlink/af_netlink.c:1878
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1581 [inline]
 free_pcp_prepare mm/page_alloc.c:1655 [inline]
 free_unref_page_prepare+0x81b/0x820 mm/page_alloc.c:3622
 free_unref_page+0x93/0x530 mm/page_alloc.c:3720
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6021
 __vunmap+0xa3c/0xc00 mm/vmalloc.c:2739
 __vfree mm/vmalloc.c:2788 [inline]
 vfree+0x61/0x90 mm/vmalloc.c:2819
 kcov_put kernel/kcov.c:437 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:533
 __fput+0x1fd/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xb0d/0x29f0 kernel/exit.c:896
 do_group_exit+0x21b/0x2e0 kernel/exit.c:1040
 get_signal+0x167c/0x1700 kernel/signal.c:2904
 arch_do_signal_or_restart+0xd1/0x11c0 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303

Memory state around the buggy address:
 ffff88812fd6b000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812fd6b080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88812fd6b100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff88812fd6b180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88812fd6b200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================